Scraper Bridge for Decanters and Clarifiers!
A Raspadora Bridge GRATT It is essential equipment in water and effluent treatment systems, designed to carry out the continuous removal of sedimented solids in decanter and clarifier tanks.
Applied in physical-chemical and biological processes, the scraper bridge guarantees the efficient collection of sludge deposited at the bottom of the tank, maintaining stable operation and avoiding excessive accumulation of solids that would compromise system performance.
How does the Scraper Bridge work?
The scraper bridge operates through a motorized assembly that moves scraper arms along the surface of the tank, generally in a circular or longitudinal movement, depending on the geometry of the clarifier.
During operation:
- The settled solids are dragged by the scraper blades
- The sludge is directed to the collection point (sludge pit)
- The clarified water remains on the surface for subsequent exit from the system
The movement is continuous and controlled, ensuring uniform removal of sludge and preventing excessive compaction at the bottom of the tank.
Configuration and Components!
The GRATT Scraper Bridge is designed according to the characteristics of the tank and can include:
- Bridge-type metal structure (fixed or mobile);
- Motorized drive system;
- Scraper arms with blades;
- Sludge collection system;
- Support wheels or rails (for rectangular tanks);
- Bearings and structural supports;
- Walkway for access and maintenance;
Manufacturing materials may vary depending on the application, with the following being common:
- Carbon steel;
- Stainless steel.
Applications!
The GRATT Scraper Bridge is widely used in:
- Water Treatment Plants (ETA);
- Effluent Treatment Stations (ETE);
- Primary and secondary decanters;
- Industrial clarifiers;
- Solid-liquid separation processes.
Technical Features!
- Continuous and automated operation;
- Low energy consumption;
- Uniform and controlled movement;
- Design adapted to the type of decanter (circular or rectangular);
- High mechanical and structural resistance;
- Ease of maintenance and access.
Operational Advantages
- Efficient and continuous sludge removal;
- Improvement in the quality of clarified water;
- Reduction of solids accumulation at the bottom of the tank;
- Increased efficiency of the decantation process;
- Reliable operation and long service life;
- Adaptation to different projects and dimensions.
Efficiency and Reliability in Sludge Removal
A Raspadora Bridge GRATT is a robust and indispensable solution for decantation systems, ensuring continuous operation, efficiency in solid-liquid separation and high performance in water and industrial effluent treatment processes.
